If you were going to fake something why would you fake an injury that will potentially cost you your career , usually ends up in you loosing the respect of the other soldiers and friends. have people look at you like you were poison, Result in hours of endless testing and expensive drugs that in themselves can destroy your health. Make life generally unappetising, make you a stigmatised out and last but not least eventually lead to depression from the stigma alone? Days being laughed at and berated because you don't suck it up and called every name in the book.